diff options
Diffstat (limited to 'video/filter/vf_dsize.c')
| -rw-r--r-- | video/filter/vf_dsize.c | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/video/filter/vf_dsize.c b/video/filter/vf_dsize.c new file mode 100644 index 0000000000..d46d22ebb2 --- /dev/null +++ b/video/filter/vf_dsize.c @@ -0,0 +1,125 @@ +/* + * This file is part of MPlayer. + * + * MPlayer is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * MPlayer is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with MPlayer; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <inttypes.h> + +#include "config.h" +#include "mp_msg.h" + +#include "img_format.h" +#include "mp_image.h" +#include "vf.h" + +struct vf_priv_s { + int w, h; + int method; // aspect method, 0 -> downscale, 1-> upscale. +2 -> original aspect. + int round; + float aspect; +}; + +static int config(struct vf_instance *vf, + int width, int height, int d_width, int d_height, + unsigned int flags, unsigned int outfmt) +{ + int w = vf->priv->w; + int h = vf->priv->h; + if (vf->priv->aspect < 0.001) { // did the user input aspect or w,h params + if (w == 0) w = d_width; + if (h == 0) h = d_height; + if (w == -1) w = width; + if (h == -1) h = height; + if (w == -2) w = h * (double)d_width / d_height; + if (w == -3) w = h * (double)width / height; + if (h == -2) h = w * (double)d_height / d_width; + if (h == -3) h = w * (double)height / width; + if (vf->priv->method > -1) { + double aspect = (vf->priv->method & 2) ? ((double)height / width) : ((double)d_height / d_width); + if ((h > w * aspect) ^ (vf->priv->method & 1)) { + h = w * aspect; + } else { + w = h / aspect; + } + } + if (vf->priv->round > 1) { // round up + w += (vf->priv->round - 1 - (w - 1) % vf->priv->round); + h += (vf->priv->round - 1 - (h - 1) % vf->priv->round); + } + d_width = w; + d_height = h; + } else { + if (vf->priv->aspect * height > width) { + d_width = height * vf->priv->aspect + .5; + d_height = height; + } else { + d_height = width / vf->priv->aspect + .5; + d_width = width; + } + } + return vf_next_config(vf, width, height, d_width, d_height, flags, outfmt); +} + +static void uninit(vf_instance_t *vf) { + free(vf->priv); + vf->priv = NULL; +} + +static int vf_open(vf_instance_t *vf, char *args) +{ + vf->config = config; + vf->draw_slice = vf_next_draw_slice; + vf->uninit = uninit; + //vf->default_caps = 0; + vf->priv = calloc(sizeof(struct vf_priv_s), 1); + vf->priv->aspect = 0.; + vf->priv->w = -1; + vf->priv->h = -1; + vf->priv->method = -1; + vf->priv->round = 1; + if (args) { + if (strchr(args, '/')) { + int w, h; + sscanf(args, "%d/%d", &w, &h); + vf->priv->aspect = (float)w/h; + } else if (strchr(args, '.')) { + sscanf(args, "%f", &vf->priv->aspect); + } else { + sscanf(args, "%d:%d:%d:%d", &vf->priv->w, &vf->priv->h, &vf->priv->method, &vf->priv->round); + } + } + if ((vf->priv->aspect < 0.) || (vf->priv->w < -3) || (vf->priv->h < -3) || + ((vf->priv->w < -1) && (vf->priv->h < -1)) || + (vf->priv->method < -1) || (vf->priv->method > 3) || + (vf->priv->round < 0)) { + mp_msg(MSGT_VFILTER, MSGL_ERR, "[dsize] Illegal value(s): aspect: %f w: %d h: %d aspect_method: %d round: %d\n", vf->priv->aspect, vf->priv->w, vf->priv->h, vf->priv->method, vf->priv->round); + free(vf->priv); vf->priv = NULL; + return -1; + } + return 1; +} + +const vf_info_t vf_info_dsize = { + "reset displaysize/aspect", + "dsize", + "Rich Felker", + "", + vf_open, + NULL +}; |